Altermagnetic lifting of Kramers spin degeneracy.

ABSTRACT: Lifted Kramers spin degeneracy (LKSD) has been among the central topics of condensed-matter physics since the dawn of the band theory of solids^1,2. It underpins established practical applications as well as current frontier research, ranging from magnetic-memory technology^3-7 to topological quantum matter^8-14. Traditionally, LKSD has been considered to originate from two possible internal symmetry-breaking mechanisms. The first refers to time-reversal symmetry breaking by magnetization of ferromagnets and tends to be strong because of the non-relativistic exchange origin¹⁵. The second applies to crystals with broken inversion symmetry and tends to be comparatively weaker, as it originates from the relativistic spin-orbit coupling (SOC)^16-19<

SUBMITTER: Krempasky J 

PROVIDER: S-EPMC10866710 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature